Harrow



No Model.)

W. V. WALKER. HARROW.

J ,6 I [1/ 2' ,2; 455 VIIV [IV 1' 2 E iii z' PATENT \VILLIAM V. VALKER,OF MORAVIA, NE\V YORK.

HARROW.

SPECIFICATION forming part Of Letters Patent NO. 426,695, dated April29, 1890.

Application filed March 11, 1889. $erial No. 302.8 19. (No model.)

To aZZ whom, it may concern:

Be it known that I, l/VILLIAM V. VALKER, of Moravia, county of Cayuga,in the State of New York, a citizen of the United States, have inventedcertain new and useful lmprovements in Harrows, of which the followingis a specification, reference being had to the accompanying drawings, inwhich Figure 1 is a top plan view of one section of the harrow. Fig. 2is a side elevation of a part of a lower frame-bar. Fig. 3 is a sideelevation of the lower frame-bar with the upper framebars and teeth in.posit-ion thereon. Fig. 4 is an end View, partially sectional, of thelower frame-bar and upper frame-bar and the fastening mechanism. Fig. 5is an enlarged detail of the tooth-fastening. Fig. 6 is a top plan viewof the plate under the tooth. Fig. 7 is the bottom plan view of thesame. Fig. 8 is a side elevation of the same. Fig. 9 is a verticalsection of the same. Figs. 10, 11, and 12 are details of the top washer.Figs. 13, 14, and 15 are detailsof the plate used in the connectionbetween the upper and lower framebars.

My invention relates to the construction of spring-tooth harrows; and myobject is to improve the constructionof the harrow, in the mode ofattaching or securing the teeth adjustably, and in the construction ofthe frame upon which the teeth are mounted.

My invention consists in the several novel features of construction andoperation hereinafter described, and which are specifically set forth inthe claims annexed.

It is constructed as follows:

A represents a section of a harrow, which is connected to the othersection by a doublehook hinge-joint 1, and in which 2 2 are theframe-bars, usually of wood, 3 3 are the teeth, of ordinary spring-toothconstruction, and 4 4: are lower frame-bars, constructed of angleironand bent upward or scarfed off on a curve or bevel, as at 5, upon theirfront ends.

B is a clamp-piece, provided wit-h ribs 6 upon its upper side, betweenwhich the bars 2 fit, and upon its lower side is provided with a slotway7 created by the ribs 8, running in opposite direction to the ribs 6,and the vertical part of the angle-iron i fits into the slotway 7, and 9is a clip or bent bolt fitting through holes 10 in the angle-iron andupward through the frame-bar 2, and thus securing the an glei ron shoesor lower f rame-bars to the upper frame-bars, and, the front ends of thebars 4 being beveled, the harrow, when in use, will ride upon the groundupon the angle-iron shoes. It will thus be seen that my harrow-frameconsists, simply, of the bars 2 and shoes 4, secured together.

To secure the teeth inposition upon the top of the bars 2, I first placeupon the bar a washer 0, provided on its lower face with studs 11,fitting in holes or recesses in the top of the bar, to prevent it fromtwisting, and the upper face is provided with two parallel ribs 12,between which the tooth fits, and one of them is provided with a notch13, and the upper face between these ribs is inclined, as shown in thedrawings, for reasons hereinafter specified.

D is the top washer, fitting upon the top of the tooth and partially atleast between the flanges 12, and it is provided on one side with adownwardly-projecting stud ll, of a shape corresponding to the notch 13,in which it fits and prevents any twisting of this washer, and the topface of this washer is beveled to correspond with the bevel of the plate0. A bolt 15 is inserted through the frame-timber 2, upward through theplate O, through a hole in the tooth, and through the washer D, and whenscrewed up locks all these parts securely together. It will be observedthat when the bevels of theplate and washer slant forward the point ofthe tooth will be correspondingly raised, and that when the plate andwasher are reversed so as to slant backward the point of the tooth willdig correspondingly deeper into the soil, thus adjusting the depth towhich the tooth will out.

hat I claim is- 1. A harrow-frame consisting of upper frame-bars restingupon a plate, a plate provided with parallel ribs across its lowersurface, and angle-iron lower frame-bars fitting between the sides ofthe slot in the plate, and a bolt passing through the upper frame-bar,the ribs on the lower face of the plate, and the rib of the angle-iron,as set forth.

2. The combinatiomwith the tooth and the upper frame-bar of the harrow,of a plate fitof the angle-iron and having transverse up- Ward flanges,between which the upper framebar fits, and an upper frame-bar, and abolt passing through the rib of the lower framebar, the clamp, and theupper frame-bar, as set forth.

In Witness whereof I have hereunto set my hand this 5th day of March,1889.

\VILLIAM V. \VALKER.

In presence of \VILLIAM Frr'rs, JAMES MACKIE.

